Refereed Reviews

1. “Production and processing of graphene and related materials’, by, Backes Claudia, Abdelkader Amr M., Alonso Concepcion, Andrieux-Ledier Amandine, Arenal Raul, Azpeitia Jon, Balakrishnan Nilanthy, Banszerus Luca, Barjon Julien, Bartali Ruben, Galiotis Costas ...More, 2D Materials, 7, issue: 2, Article Number: 022001, April 2020 (doi: 10.1088/2053-1583/ab1e0a)

2. “Graphene Mechanics: Current Status and Perspectives” by C. Galiotis, O. Frank, E. N. Koukaras and D. Sfyris, Annual Review of Chemical and Biomolecular Engineering, 6, 121-140, 2015 (doi. 10.1146/annurev-chembioeng-061114-123216)

3. “Carbon Nanotube–Polymer Composites: Chemistry, Processing, Mechanical and Electrical Properties” by Z. Spitalsky, D. Tasis, K. Papagelis, C. Galiotis, Progress in Polymer Science, 357-401: 35/3, 2010.

4. “A Review of the Fundamentals and Applications of LRS Microprobe Strain Measurements” by L. Schadler and C. Galiotis, International Materials Reviews, 116-134: 40/3, 1995.

5. “Laser Raman Spectroscopy; A New Stress/Strain Measurement Technique for the Remote and On-Line Non-Destructive Inspection of Fibre-Reinforced Polymer Composites” by C. Galiotis, Materials Technology, 203-209: 9/10, 1993.

Patents

1. “Art protection with the use of Graphene Materials” Date of filing: 18-12-2019. To: EPO. Status: Pending. Currently passed PCT examination and entered the national phase.

2. “Production method of innovative nanolaminate plastic films reinforced with highly oriented 2D materials”. From: Hellenic Industrial Property Organisation. No. 1010733. Date of granting: 25-07-2024. Valid until 19-7-2043.

3. “Art protection with the use of Graphene Materials”. From: United States Patent and Trademark Office. No: US 11,999,623 B2 . Date of granting: 04-06-2024.

4. “Smart paints using graphene oxide and other two dimensional materials”. From: Hellenic Industrial Property Organisation. Date of granting: 14-05-2024. Valid until 30-03-2043.

5. “Art protection with the use of two-dimensional materials such as graphene”. From: Hellenic Industrial Property Organisation. No: 1009757. Date of granting: 01-06-2020. Valid until 01-01-2039.

6. “Lattice frames with composite polymers”, GR patent No. 1003936, issued on 5/7/2002. / “Truss Structured Heavy Duty Composite Bridge”,GR patent No. 1003936, issued on 5/7/2002

7. “Method and Apparatus for Measuring Raman Spectrum and Physical Properties In-Situ”, by J. Dupee, C. Galiotis and D. L. Davidson. US Patent # 5,999,255, issued on 7/ 12/1999.

Laser Raman Microscopy (LRM) is the only experimental technique able to measure stress or strain on individual fibres at the microscopic level. The Raman wavenumbers of certain vibrational modes of crystalline materials – such as carbon, SiC or Kevlar fibres embedded in composites – are stress/strain dependent, most frequently through a simple linear relation that can be established experimentally and constitutes the fibre-specific Raman Calibration Curve (RCC). The RCC of a fibre can be used reversely to translate shifts captured from the same type of fibre in a composite material, to stress/strain.

Understanding the fracture behavior of composite materials is a key parameter in optimizing design  and production routes as well as their mechanical performance. We study the mechanical and fracture behaviour of polymer- and ceramic-matrix composite materials under a wide range of specimen geometries and loading configurations. We are interested in identifying the damage and failure mechanisms developing at the microscale during loading as well as in understanding their correlation and evaluating their role in the material failure.

Our semi-industrial autoclave by Aeroform Limited (Poole, UK) can run simultaneous temperature/pressure/vacuum profiles within the ranges of 25 to 225°C and -1 to 10 Bar. We use the chamber to cure mainly polymer- and epoxy-matrix composites, custom laminates (eg with embedded SMA actuators) and nanocomposite materials (eg buckypapers). The autoclave's pressurized environment is also used in investigating watertightness of submersed structures. Manufacturing possibilities include Resin Film Infusion (RFI), Vacuum Bagging, Resin Transfer Infusion (RTI), Prepreg, and Wet/Hand-layup.